Oodla Wirra. Progress reports and final report to licence expiry/full surrender, for the period 9/11/1983 to 8/11/1985.
Published: 04 Dec 1985 Created: 28 Oct 2024 Revised: 07 Dec 2024

Exploration activities have included reconnaissance (1:20,000 scale) and detailed (1:1000 scale) geological mapping, limited surface rock chip sampling (9 samples), and the excavation of 31 costeans to expose for examination more than 580 linear m...

Exploration activities have included reconnaissance (1:20,000 scale) and detailed (1:1000 scale) geological mapping, limited surface rock chip sampling (9 samples), and the excavation of 31 costeans to expose for examination more than 580 linear m of bedrock stratabound gold mineralisation of the Telfer type, occurring in arkosic tillite and quartzite beds of the Neoproterozoic Appila Tillite. The geochemical sampling results from 56 samples taken from these trenches were disappointing, with no notable gold anomalism and no coherent pathfinder element associations, but it was decided that the southern portion of the Mount Grainger line of historic workings, and possible northern extensions to the goldfield occurring around the nose of the Mount Grainger anticline, will be retained under two mining leases and investigated by bulk sampling below the level of surface leaching. The Aureous line of workings in the Tarcowie Siltstone, the Dustholes line of workings put down along faults crossing the Gumbowie Arkose Member of the Pepuarta Tillite, small workings made in the Tindelpina Shale Member of the Tapley Hill Formation north of Mount Grainger, small workings to the south of the Mount Grainger goldfield in ?Tertiary gravels and colluvial to alluvial deposits, and the old Medora South workings, were also investigated and ideas were formulated as to their various gold emplacement origins.

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About this record

Record No mesac12299
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor Aminco and Associates Pty Ltd
Sponsor
Tenement
Tenement Holder Jarmand Minerals and Exploration Pty Ltd;Cambrian Exploration Ltd
Operator Jarmand Minerals and Exploration Pty Ltd
Geological Province
Mine Name Mount Grainger Gold Field;Medora mines;Dustholes mines;Heithersays workings;Golden Field workings;Condah Hill workings;Last Hope workings;Rainbird workings;Princess Margaret workings;Oodla Wirra workings
Stratigraphy
Commodity
Notes
Geographic Locality: Oodla Wirra;Nackara Creek;Wegunna Homestead (abandoned)
Doc No: Env 05422

Geographic Locality: Oodla Wirra;Nackara Creek;Wegunna Homestead (abandoned) Doc No: Env 05422

Language English
Metadata Standard ISO 19115-3

Citations

Use constraints License
License Creative Commons Attribution 4.0
Persistent identifier https://pid.sarig.sa.gov.au/document/mesac12299
Citation Seymour, D.L. 1985. Oodla Wirra. Progress reports and final report to licence expiry/full surrender, for the period 9/11/1983 to 8/11/1985. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac12299

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[139.001336,-32.91518],[139.151337,-32.91518],[139.151337,-32.74851],[139.001336,-32.74851],[139.001336,-32.91518]]]}
Purpose

                    
                    

                    
                  
Lineage